Clang-format editor and legacy code

[Lgt2x]

Pull Request Type

• [ ] GitHub Workflow changes
• [ ] Documentation or Wiki changes
• [x] Build and Dependency changes
• [ ] Runtime changes
  • [ ] Render changes
  • [ ] Audio changes
  • [ ] Input changes
  • [ ] Network changes
  • [ ] Other changes

Description

Clang-format had not been run on the internal editor code (which is now built as part of the main project), to avoid mixing build changes with formatting changes.

Also run it on the rest of the legacy code.

[winterheart]

ok to merge.